Abstract: An underground heat transferring method and system is disclosed. The system includes a water-blocking heat-exchanging outer wall defining an enclosure and an insulated tube located inside the enclosure. The insulated tube defines a perforated portion at the bottom. Multiple heat exchanging particles are disposed between the outer wall and the insulated tube. The system also includes an inlet that is configured for receiving a working fluid and directing the working fluid to flow through the heat exchanging particles towards the bottom of the enclosure. A pump located inside the insulated tube is configured for pumping the working fluid collected at the bottom of the insulated tube. An exhalant siphon fluidly connected to the pump inside the insulated tube is configured for delivering the working fluid out of the underground heat transferring system.